公开(公告)号：US20150364987A1

公开(公告)日：2015-12-17

申请号：US14764949

申请日：2013-02-05

申请人： Katsuya NISHIKAWA

发明人： Katsuya NISHIKAWA

IPC分类号： H02M1/32

CPC分类号： H02M1/32 ,  H02H3/16 ,  H02H3/33 ,  H02H7/10 ,  H02H7/1203 ,  H02H7/1216

摘要： A line-to-ground fault location detector detects, based on a difference between a current flowing from a power transmission circuit to a load circuit, and a current flowing from the load circuit to the power transmission circuit, whether a line-to-ground fault is occurring at a power-transmission-circuit side or a load-circuit side. A contactor controller opens a first contactor when the load circuit detects the occurrence of the line-to-ground fault, and when a line-to-ground fault location detector detects that a location of the line-to-ground fault is at the power-transmission-circuit side, the contactor controller maintains the open state of the first contactor even if an operation to instruct closing of the first contactor is made after the first contactor is opened.

摘要翻译： 线路对地故障定位检测器基于从电力传输电路流向负载电路的电流与从负载电路流向电力传输电路的电流之间的差异，检测线路对地 故障发生在电力传输电路侧或负载电路侧。 当负载电路检测到线路对地故障的发生时，接触器控制器打开第一接触器，并且当线对地故障定位检测器检测到线路对地故障的位置处于电源时 即使在第一接触器打开之后进行指示关闭第一接触器的操作，接触器控制器也保持第一接触器的打开状态。